[Bluetooth 4.1 + CSR Chip Ensure Stability] Bluetooth headphones adopt advanced CSR Chip technology, provide a more stable signal, better transmission, faster and easier pairing with IOS/ Android devices, iPhone 7, 6, 6 Plus, Samsung Galaxy S7, iPod Touch, iPad, Smart TV, and other Bluetooth devices or devices with 3.5 mm audio port. (Note: The Microphone only works in the wireless mode)